It's not type 2, no. Fire//Ice puts it past Modern into Legacy so it fits into the "casual" format with legacy legality but not legacy power level.
I'm not up on the latest block either so I can't help much. I'd definitely find some more Guildgates and/or some Izzet Boilerworks if you can't field more of the rare lands.
You really want some more drawing in there or you're likely to peter out if you don't get lucky and pull a threat they can't answer. Not sure what specifically, I don't know if there is any good drawing with the Izzet watermark. Compulsive Research and Telling Time were both in Ravnica but not watermarked.
Inicdentally, I saw the (over a year old) discussion about discard decks on the other MTG thread on this board and it brought to mind this build, which is what I'd probably go with if I was buying a new casual 1v1 deck.
(22 Land)Mindlash Sliver x4Ravenous Rats x4Augur of Skulls x4Oona's Prowler x4Hypnotic Specter x4Guul Draz Specter x2
(22 Creatures)The Rack x4Raven's Crime x4Hymn to Tourach x4Dark Ritual x4
(16 Other Spells)
Picking up on that conversation, discard can work pretty well in 1v1 casual (1v1 only. Single target discard is awful in multiplayer.) It's not really analogous to a permission deck because it works best in an aggro configuration. Discard attached to cheap creatures with some beaters thrown in. Oona's Prowler is perfect in the latter role because its "drawback" for being a 3/1 flyer for 2 feeds into exactly what you want your deck to be doing anyway. Dark Ritual into Hypnotic Specter was the original backbreaking turn 1 play and it's still fun, if significantly less powerful, now.
The other reason discard is not analogous to permission is that you can't counter lands but you can discard them just like any other card. That means that, if the discard engine is functioning, the opponent's mana base will be shaky at best and a lucky random discard off Hymn to Tourach can be crippling for a while.
The worst matchup is other aggro decks but in those games The Rack and Guul Draz Specter will go off more often. If I was the type to build a sideboard for a casual deck, I'd probably put some Quest for the Nihil Stone
in it for that sort of matchup.
Raven's Crime could be a number of other 1 mana discard sorceries. Thoughtseize would obviously be ideal but is never likely to be in budget for me. Inquisition of Kozilek was probably the runner up. Raven's Crime goes for the reach angle, if I get mana flooded it's something to do with excess land (as more than 4 is really not necessary.) Inquisition is more aggressive. If I can strip a critical low cost creature they were going to stabilize with, that's great, and if there's nothing nonland or CMC 3 or below I've probably already won.
This all applies to a casual meta, of course. This is nothing that would be close to legacy viable.